Casting brass and other metals



(I vo Modem? H. A ROWLAND CASTING BRAssAND OTHER METALS. No. 272,088, PatentedTeb, 13, 1883.

INVENTOR.

N. PETERS. Phnlulilhogrlphcr, Wmmgm-L D c.

UNITED STATES PATENT OFFIcE.

HENRY A. ROWLAND, OF BALTIMORE, MARYLAND.

CASTING BRASS AND OTHER METALS.

SPECIFICATION forming part .of Letters Patent No. 272,088, dated February 13, 1883. Application filed December 16, 1882. (No model.)

To all whom it may concern Be it known that I, HENRY A. ROWLAND, of Baltimore city, State of Maryland, have invented certain new and useful Improvements in Casting Brass and other Metals; and. I do hereby declare that the following is a full, clear, and exact description thereof, reference being bad to the accompanying drawings, and the letters of reference markedthereon, which form a part of this specification.

In the drawings, Figure 1 is a sectional view of a mold for casting plates of metal for any purpose. Fig. 2 is a perspective view of the same mold without the cover B. Fig. 3 is a section of the hinge O. I

A is a box-mold, with a cover, B, hinged 'at O.

D is a pipe communicating with a gasometer and passing through the cover B at F.

E is the mouth of the mold, provided with a funnel for the better pouring of the metal.

Gris aneck or trough let into the side of the mold at and rising, to the level of the cover Bat E.

Manufacturers have found by experience that in order to get a perfectly homogeneous casting with anyot' the metals that unite readily with oxygen when melted it is necessary to produce two conditions; first, an atmosphere into which the metal is poured that will be free from oxygen, and, secondly, a means by which any oxide of the metal which has -i'ormed upon it before it reaches the mold may has been possible to attain by any of the methods heretofore in use.

My invention consists in forcing into a mold in which metal is to be cast a stream of ordinary illuminating-gas or any other inflammable deoxidizing-gas, as shown in the drawings at D,-in such a manner that it will first fill it, thereby expelling the oxygen, and thenflow out at the month. When the molten metal is poured it will ignite the gas at E,as it escapes from the mold, as soon as it comes into con tact with it, and thus produce the reducingflame I, through which the metal must pass on its way into the mold. flame at E the molten metal flows down the inclined gutter G beforereaching the mold,

and any oxide that may have failed to be reduced by the flame at Ewill either be driven back toward E by the force of the stream of gas that is flowing over its surface or be reduced by the waste heat of the molten metal, the atmosphere being free from oxygen.

1 do not claim to be the inventor of casting metal in an atmosphere ofdeoxidizting-gas, nor am I the inventor of the method of reducing the oxide of metal by the use of a flame at the mouth of the mold; but I believe myself to be the first one who has ever used the ordinary illuminatinggas or any other inflammable deoxidizing-gas to accomplish both purposes by one operation, and that this is the cheapest and best method devised for the purpose.

What I claim, therefore, as my invention is- The above-described method ofcasting metal by first forcing illuminating-gas or any other inflammable deoxidizing-gas into a mold, so as to expel the air therefrom and occupy its place, and then pouring the metalthrough the ignited gas as it escapes from the mouth of the mold, substantially as described, for the purpose set forth.

HENRY A. ROWLAND. Witnesses ARTHUR S'IEUART, JAMES L. STEUART. 

